package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundsTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.to.es.SkuHasStockTo;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.add.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private SpuImagesService spuImagesService;

    @Autowired
    private AttrService attrService;

    @Autowired
    private ProductAttrValueService productAttrValueService;

    @Autowired
    private SkuInfoService skuInfoService;

    @Autowired
    private SkuImagesService skuImagesService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    private CouponFeignService couponFeignService;

    @Autowired
    private BrandService brandService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private WareFeignService wareFeignService;

    @Autowired
    private SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * TODO 高级部分完善
     * 这里适合用Seata的AT模式
     *
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1.保存spu基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);

        //2.保存Spu的详情图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        this.spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3.保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(), images);

        //4.保存spu的规格参数值 pms_product_attr_value
        List<BaseAttrs> baseAttrVos = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrVos.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();

            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity attrEntity = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(attrEntity.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(spuInfoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);

        //5.保存spu的积分信息 gulimall->sms sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundsTo spuBoundsTo = new SpuBoundsTo();
        BeanUtils.copyProperties(bounds, spuBoundsTo);
        spuBoundsTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundsTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }

        //6.保存当前spu对应的所有sku信息:
        List<Sku> skus = vo.getSkus();
        if (!CollectionUtils.isEmpty(skus)) {
            skus.forEach(sku -> {
                String defaultImg = "";
                for (Image image : sku.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                //  private String skuName;
                //  private BigDecimal price;
                //  private String skuTitle;
                //  private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(sku, skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //6.1 sku的基本信息 pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                //保存之后才能拿到id
                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> skuImagesEntities = sku.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(skuImagesEntity -> {
                    return StringUtils.isNotEmpty(skuImagesEntity.getImgUrl());
                }).collect(Collectors.toList());
                //6.2 保存sku的图片信息 pms_sku_images
                //TODO 没有图片,路径无需保存
                skuImagesService.saveBatch(skuImagesEntities);

                List<Attr> attrs = sku.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attrs.stream().map(attr -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(attr, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                //6.3 sku的销售属性信息 pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //6.4 sku的优惠券,满减信息
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(sku, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal(0)) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            wrapper.and(w -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }

        String status = (String) params.get("status");
        if (StringUtils.isNotEmpty(status)) {
            wrapper.eq("publish_status", status);
        }

        String brandId = (String) params.get("brandId");
        if (StringUtils.isNotEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if (StringUtils.isNotEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        //1.查出当前spuId对应的所有sku信息,品牌的名字
        List<SkuInfoEntity> skuInfoEntityList = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skuInfoEntityList.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //2.查询当前sku的可以被检索所的规格属性
        //2.1先找出基本属性
        List<ProductAttrValueEntity> productAttrValueEntityList = productAttrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = productAttrValueEntityList.stream().map(attrValueEntity -> attrValueEntity.getAttrId()).collect(Collectors.toList());
        //2.2找出基本属性中可以检索的
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);

        //2.3将以被检索所的attrValueEntity映射为SkuEsModel.Attr
        Set<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attr> attrList =
                productAttrValueEntityList.stream()
                        .filter(attrValueEntity -> idSet.contains(attrValueEntity.getAttrId()))
                        .map(attrValueEntity -> {
                            SkuEsModel.Attr attr = new SkuEsModel.Attr();
                            BeanUtils.copyProperties(attrValueEntity, attr);
                            return attr;
                        })
                        .collect(Collectors.toList());

        //3.发送远程调用,库存系统查询是否有库存,如果发生异常，默认有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkusHasStock(skuIdList);
            List<SkuHasStockTo> tos = r.getData(new TypeReference<List<SkuHasStockTo>>() {});
            stockMap = tos.stream().collect(Collectors.toMap(SkuHasStockTo::getSkuId, SkuHasStockTo::getHasStock));
        } catch (Exception e) {
            log.error("库存服务查询异常:原因{}", e);
        }

        //4.封装SkuEsModel需要的数据
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skuInfoEntityList.stream().map(skuInfoEntity -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(skuInfoEntity, esModel);
            //skuPrice,skuImg，属性不一致
            esModel.setSkuPrice(skuInfoEntity.getPrice());
            esModel.setSkuImg(skuInfoEntity.getSkuDefaultImg());
            //hasStock,hotScore，属性不一致
            //设置库存信息，如果发生异常，默认有库存
            if (finalStockMap == null) {
                esModel.setHasStock(true);
            } else {
                esModel.setHasStock(finalStockMap.get(skuInfoEntity.getSkuId()));
            }

            //TODO 热度评分 0
            esModel.setHotScore(0L);

            //查询品牌和分类的名字信息，brandName,brandImg,catalogName
            BrandEntity brandEntity = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brandEntity.getName());
            esModel.setBrandImg(brandEntity.getLogo());
            CategoryEntity categoryEntity = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(categoryEntity.getName());

            //设置检索属性,attrs
            esModel.setAttrs(attrList);

            return esModel;
        }).collect(Collectors.toList());

        //5.将数据发送给es进行保存:gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0) {
            //远程调用成功
            //6.修改spu的 发布状态
            this.baseMapper.updateSpuState(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            //远程调用失败
            // TODO 7 重复调用，接口幂等性，重试机制

        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        Long spuId = skuInfoEntity.getSpuId();
        SpuInfoEntity spuInfoEntity = this.getById(spuId);
        return spuInfoEntity;
    }

}